Galya never liked her birthday, because it fell on the thirty-first of December! This day brought her misfortune - she suddenly became an orphan and ended up in her aunt’s family, where she became a victim of the intrigues of her ruthless cousin Lera. She immediately disliked her sister and did everything to get her out of the house. As a result, Galya ended up in prison for a crime she didn’t commit! There she met Lika, who was also imprisoned on false charges. Soon the girls realized: the same person was involved in their troubles! And then the friends began to develop an escape plan...